The new Mi Earphones adopts the coolest hybrid technology which is the combination of one dynamic driver and two-way balanced-armature (BA) drivers,and their relative position to each other in the housing, allowed us to develop the smallest three-way in-earphones that offer a true reference-quality sound. The balanced-armature will be handling on high frequency audio while dynamic driver will handle the low frequency audio thus providing a more 3D surround effect.